Only 1 whole time.
After that, there's only enough room for another 475,
so the whole 525 can't go in again.
525 ÷ 15 = 35
525 ÷ 5 = 105
fifteen 525 / 35 = 15
75 times.
Exactly 75 times
55
14 times with a remainder of 7
Exactly 35 times
65 with remainder 5.
262 with 1 remaining 525 - 1 = 524 = 2 x 262
1000 times
Six times, with a remainder.